scholarly journals Study of the infl uence of plasticizer DES M-2 on the physical, mechanical and technological properties of plasticate PVC

2020 ◽  
pp. 33-36
Author(s):  
R. F. Nafikova ◽  
R. N. Fatkullin ◽  
F. I. Afanasiev ◽  
L. B. Stepanova ◽  
A. A. Islamutdinova
Keyword(s):  
Technological Properties ◽  
Effi Ciency ◽  
Compound Materials ◽  
Practical Recommendations

The paper presents the results of studies of the infl uence of the new plasticizer DES M-2 on the physical, mechanical, technological and operational properties of plasticate PVC. The effi  ciency of using M-2 DES for PVC plasticization is shown. Practical recommendations are formulated that are necessary when compiling PVC compound materials and products using DES M-2.

scholarly journals Physical-chemical composition and technological properties of demineralized milk whey received by membrane methods

2018 ◽  
Vol 5 (3) ◽  
pp. 33-39 ◽  
Author(s):  
I. Romanchuk ◽  
A. Minorova ◽  
N. Krushelnytska
Keyword(s):  
Raw Materials ◽  
Technological Properties ◽  
Milk Whey ◽  
Physical Chemical ◽  
Effi Ciency ◽  
Acid Whey ◽  
Foam Forming ◽  
Industrial Samples ◽  
Membrane Methods ◽  
Cheese Production

Aim. To investigate the composition and properties of the samples of cheese and acid milk whey, obtained in industrial conditions using a combination of nanofi ltration and electrodialysis methods. Methods. Determi- nation of physical-chemical indices using standard methods, study of functional-technological properties of demineralized whey by common methods. Results. It was established that there was high effi ciency of apply- ing membrane methods for processing of secondary resources in current conditions of raw materials source, which are presented by different kinds of milk whey, formed during cheese production. It was determined that processing of different kinds of whey using the combination of nanofi ltration and electrodialysis methods led to a considerable decrease in the content of ash compared to the initial whey. The level of demineraliza- tion of cheese whey may amount to 90 %, that of acid whey – 75 %. In addition to dry kinds of whey, liquid demineralized whey is of some interest for practical application, which may be used during the production of sour-milk and milk-containing drinks due to a high content of dry substances. It was found that the increase in protein content in dry demineralized whey, obtained using the complex of membrane methods of processing, led to a considerable increase in its foam-forming, moisture-retaining, fat-retaining and emulsifying abilities compared to milk whey, obtained by a traditional technology. Conclusions. It was established that dry demin- eralized whey, obtained by a combination of nanofi ltration and electrodialysis methods, had better organoleptic and physical-chemical indices compared to dry whey. The investigated industrial samples were remarkable for improved functional and technological properties which allows using them in the formulations of other food products.

Operation intensification methods of aggressive industrial sewage neutralization facilities

2020 ◽  
Vol 76 (11) ◽  
pp. 1149-1153
Author(s):  
N. S. Tsarev ◽  
V. I. Aksenov ◽  
I. I. Nichkova
Keyword(s):  
Cold Water ◽  
Specific Productivity ◽  
Technological Properties ◽  
Technological Parameters ◽  
Preliminary Heating ◽  
Sediment Treatment ◽  
Circulating Water ◽  
Equipment Operation ◽  
Sediment Volume ◽  
Industrial Sewage

To neutralize the waste pickling solutions and rinsing water, resulting from cleaning metal products s surface of rust by acids solutions, lime is used. Being cheap, this method of sewage neutralization has considerable drawbacks. Forming in the technological pipes strong gypsum depositions and low specific productivity of the equipment for sediment dewatering are most significant of them. Characteristic of aggressive industrial sewage, formed at pickling of ferrous metals presented. Methods of elimination of drawbacks of industrial sewage neutralization by lime considered, including stabilization of neutralized industrial sewage and control of properties of the sediment formed. It was noted, that stability of the circulating water can be provided by accelerating of crystallization of the forming gypsum sediments by introducing in it fine priming powder and heating the neutralized water up to 65-70 °С followed by thermal softening of a part of circulating water, removed out of the circulating system. It was shown, that the heating of the water and the ongoing changes of the composition and properties of the sediment result in decrease of filtration resistance 2-3 folds, increase of deposition speed 3-4 folds and decrease the sediment volume 1.5-2 folds comparing with lime neutralization in cold water. Calculated dozes of lime at the heating were taken the same as at the regular lime neutralization. Elimination of the circulating water oversaturation by bi-water gypsum can be reached also by addition into the water of powder-like gypsum pulp - priming powder for microcrystals of the gypsum, followed by aeration during 30-40 min. This method was tested under industrial conditions. Technological properties of the forming sediment can be improved by sediment treatment by flocculants and preliminary heating of the neutralized water up to 65-70 °С. Control of technological properties of the sediment is done by addition of flocculants and heating of the neutralized water. Recommendations for improving operation of the neutralization facilities presented with indicating particular technological parameters of the equipment operation for sewage and sediment treatment. 

Еnforcement of Property Rights and Conractual Obligations

2003 ◽  
pp. 83-100 ◽  
Author(s):  
A. Radygin ◽  
R. Entov
Keyword(s):  
Property Rights ◽  
Legal Framework ◽  
Economic Consequences ◽  
Theoretical Approaches ◽  
Contractual Obligations ◽  
Regional Authorities ◽  
Practical Recommendations

The paper deals with theoretical approaches to the problems of property rights and contractual obligations and with analysis of economic consequences of the imperfect enforcement system. In particular, the authors consider Russian experience in the sphere of corporate conflicts. Legal and practical recommendations related to the improvement of legal framework, judiciary reform, executory process and different federal and regional authorities are also presented.

Institutional environment creating for attracting investment into infrastructure: The cases of Russian regions

2019 ◽  
pp. 134-157 ◽  
Author(s):  
G. A. Borshchevskiy
Keyword(s):  
Institutional Environment ◽  
Private Investment ◽  
Infrastructure Development ◽  
Russian Regions ◽  
Development Indicators ◽  
The Russian Federation ◽  
The Behavior Of Government ◽  
The City ◽  
Nenets Autonomous ◽  
Practical Recommendations

The article examines the institutional process in a regional economy connected with the infrastructure development. We use the neoinstitutional approach to study factors that influence the behavior of government and business in their interaction in the economy. We also use statistical methods to analyze the dynamics of socio-economic development indicators of the subjects of the Russian Federation as well as the results of measures to attract private investment into infrastructure, including the PPP. We chose the city of Moscow and the Yamalo-Nenets Autonomous District as two empirical case studies which differ in economic and geographic conditions, but both demonstrate success in attracting private investment and implementing infrastructure projects. Our conclusions are consistent with a theory that asserts the primacy of institutional environment in relation to project implementation. We make also some practical recommendations for the development of the institutional environment which are acceptable for all regions solving similar problems of infrastructure development.

ИССЛЕДОВАНИЕ ТОЧНОСТИ ДЕТАЛЕЙ, ПОЛУЧАЕМЫХ ПРИ РАЗДЕЛИТЕЛЬНЫХ ОПЕРАЦИЯХ В ПЕРЕНАЛАЖИВАЕМЫХ ШТАМПАХ

2018 ◽  
pp. 52-63
Author(s):  
Е. А. Фролов ◽  
В. В. Агарков ◽  
С. И. Кравченко ◽  
С. Г. Ясько
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Balance Method ◽  
Experiment Planning ◽  
Practical Recommendations

To determine the accuracy of the readjustable punches for separating operations (perforation + punching out) of sheet-metal forming, the accuracy parameters were analyzed using the random balance method using the method of experiment planning. Analytical dependencies are obtained to determine the values of deviation of the outer and inner contour dimensions of perforated and punched out sheet parts. From the dependencies obtained, it is possible to estimate and predict the value of deviation in the dimensions of the resulting part at any time during the operation of the punch. Practical recommendations on the calculation of the actuating dimensions of the working elements (stamping punch, matrix) of readjustable punches are offered.

First Insights on Peruvian Luxury Consumers

2018 ◽  
Vol 9 (8) ◽  
pp. 699-712
Author(s):  
Anne-Flore Maman Larraufie ◽  
Keyword(s):  
Emerging Markets ◽  
Cultural Dimensions ◽  
Historical Background ◽  
Two Stage ◽  
Secondary Sources ◽  
Strong Potential ◽  
Analytic Process ◽  
Emerging Country ◽  
Research Questions ◽  
Practical Recommendations

Peru is an emerging country showing strong potential for future luxury developments. It already holds luxury regular consumers, mainly in the Lima capital. However, it is currently approached in a standardized process by luxury firms, following what is done in other emerging markets for luxury. To be efficient, it is necessary to get more knowledge about Peruvian consumers. This is what this article aims at. After reviewing the historical background of the country along with its cultural dimensions, we present results from a two-stage analytic process based on data collected from secondary sources and interviews with consumers. We derive from that practical recommendations for luxury managers and propose some research questions and hypotheses to be further explored and tested.

Productivity of corn hybrids of different fao groups depending on microfertilizers and growth stimulants under irrigation in the south of Ukraine

2016 ◽  
Vol 3 (1) ◽  
pp. 55-60
Author(s):  
Yu. Lavrynenko ◽  
R. Vozhegova ◽  
O. Hozh
Keyword(s):  
Grain Quality ◽  
Laboratory Method ◽  
The South ◽  
Corn Hybrids ◽  
Early Maturity ◽  
Effi Ciency ◽  
Grain Moisture ◽  
Grain Productivity ◽  
The Impact

The purpose of the research is to identify effi cient microfertilizers and growth stimulants considering biologi- cal features of new corn hybrids of different FAO groups under irrigation conditions in the South of Ukraine and trace their impact on grain productivity of the plants. The methods of the research are the fi eld method – to study the interaction of the research object with experimental factors of the natural environment, to register the yield and evaluate the biometrical indices; the laboratory method – to measure soil moisture, grain moisture content and grain quality indices; the statistical method – to evaluate the reliability of the obtained results; the calculation methods – for economic and energetic assessment of the growing techniques used. The results of the research. The paper defi nes the impact of microfertilizers and growth stimulants on the yield and grain quality of the corn hybrids of different maturity groups and on the economic effi ciency of growing them. The conclusions of the research. Under irrigation conditions of the Southern Steppe of Ukraine it is recommended that the following hybrids should be grown in dark-chestnut soils: early maturity DN Pyvykha, medium-early Skadovskyi, medium maturity Kakhovskyi and medium-late Arabat, using the growth stimulants – treating the seeds with Sezam-Nano and fertilizing with Grainactive at the stage of 7–8 leaves.

Mechanical Factors of Infl uence on Biological Effi ciency of Solanum Nigrum L.

2014 ◽  
Vol 1 (2) ◽  
pp. 20-23
Author(s):  
O. Ivashchenko ◽  
O. Ivashchenko
Keyword(s):  
Solanum Nigrum ◽  
Black Nightshade ◽  
Effi Ciency ◽  
Weed Plants ◽  
Sensitivity Level ◽  
Solanum Nigrum L ◽  
Small Plot ◽  
Mechanical Factors ◽  
The Moment ◽  
Working Out

Aim. Studying of black nightshade young plants’ response to the induced mechanical stresses. Methods. Researches conducted in small plot fi eld experiments. Results. Change of sensitivity level of Solanum nigrum L. plants depending on phases of their development at the moment of damage of elevated parts has been proven. Owing to loss of the surface capable to photosynthesis, there is an essential decrease in volumes of photosynthesis at plants of weed survived and their possibilities of ontogeny passage. The deep induced dis- stresses reduce biological effi ciency of plants, their ability to accumulate weight and to form seeds and even lead them to death. Conclusions. The defi ned principles of response of weed plants to the induced mechanical dis-stresses are can be used for working out and ecological receptions of crops protection from weeds.

Sign in / Sign up

Export Citation Format

Share Document